4.0 sohc NON TTY cyl head bolt torque specs?

[Devan]

Im ditchin the factory cyl head stretch bolts for some grade 12 reusables for my supercharged 4.0 sohc and i was wondering if anybody had torque and tightening procedures for non tty grade 12 bolts? ARP head studs were too expensive but if i build a proper motor ill sure get em. I just figure that torque and tightening procedures for Non TTY bolts would be somewhat diff then for stretch bolts. Im also waitin on a response from Morona Racing bout torque specs for his grade 12 bolts.

 

[974X4BLACKSPORT]

Bolt torque/stretch specs allways come from the faster manufacturer.

 

[Devan]

Bolt torque/stretch specs allways come from the faster manufacturer.

Huhh?

 

[fast_dave]

@Devan

For the fastest answer, call Morona.

I'd imagine as the years go by, and popularity of modding V-6's decreases, Morona checks his e-mail very infrequently.

For instance, his webpage has been pretty static.

HTH & YMMV

 

[Mbrooks420]

Huhh?

He means fastener. You’re probably looking at a two step procedure with the second being in the neighborhood of 70ft lbs.

 

[Devan]

He means fastener. You’re probably looking at a two step procedure with the second being in the neighborhood of 70ft lbs.

Yea I know what he actually meant when he said faster and meant fastener but he was also talking about bolt stretch. With TTY bolts you get stretch and have a 2 step tightening procedure but with non TTY bolts you just have a single torque spec one time procedure and they don't work off stretch the way TTY bolts do.

 

[Devan]

@Devan

For the fastest answer, call Morona.

I'd imagine as the years go by, and popularity of modding V-6's decreases, Morona checks his e-mail very infrequently.

For instance, his webpage has been pretty static.

HTH & YMMV

I actually got my head bolts from Morona way B4 the 1st post on this thread, they are the Grade 10.9s. And he even guessed what might be good torque specs on the phone when I spoke to him. I just don't remember what torque spec he said, that's why I'm asking the interweb. According to the Ford workshop manual for the TTY bolts you tighten them to 9lb ft in sequence then 18lb ft in sequence then turn each bolt 90 degrees in sequence and then another 90 degrees in sequence. But without TTY bolts does anybody have a good recommendation for grade 10.9 cyl head bolt torque specs when you have a cast iron block with aluminum cylinder heads?

 

[Josh P]

The ARP bolts get torqued to 110 ft/lbs in a sequence. I'd expect the same amount of clamping force from any fastner I used.

 

[410Fortune]

Yep

I would do a 2-3 stage sequence
Ending at 80-100 ft lbs or so

If I had to guess

You do enough heads and head gaskets with tty bolts you realize it’s about 100 ft lbs at the end of that last 90 degrees. How do we know? By feel. I know what 100 ft lbs feels like

 

[Josh P]

How do we know?

You pulling threads when you tighten?

 

[410Fortune]

Nobody multitasks like me
I’m working on taking the josh p
Route and keeping my posts short and sweet

 

[Josh P]

Nobody multitasks like me
I’m working on taking the josh p
Route and keeping my posts short and sweet

I'm flattered.

 

[Mbrooks420]

Yea I know what he actually meant when he said faster and meant fastener but he was also talking about bolt stretch. With TTY bolts you get stretch and have a 2 step tightening procedure but with non TTY bolts you just have a single torque spec one time procedure and they don't work off stretch the way TTY bolts do.

I did the best with the absolute lack of information your lame “huh” had.

Sorry bro.

 

[Devan]

I did the best with the absolute lack of information your lame “huh” had.

Sorry bro.

Actually the cyl head bolts I have are grade 12.9 not grade 10.9. I have 4 of these Cologne 4.0 SOHC engines sitting on the floor in my garage right now and a 5th in my truck. I got 3 of em for the price of 1 and the fourth one I got free out of an 05 to 09 V6 Stang that I was V8 swapping and the original from my truck and my truck is coming up on 400k, so needless to say I've done head gaskets on these motors a few times(plus I was a Ford tech for about 3 yrs) lmao especially when your running a supercharger but the trucks original engine did pretty good with it, installed a Tbird m90 on 5-6psi at around 225k and then cracked cyl 4 I think it was at around 335k, trying to run a 6.2 raptor lol, I've actually seen cyl 4 crack in that way almost identically 2 or 3 times before on other 4.0 SOHCs. Actually SuperSix Motorsports has it pretty well documented I think in some PDFs. But the original motor would've kept goin for a good while if I wasn't hoonin off but that was a long time ago. Now I'm putting together another motor and rebuilding and porting another Tbird m90 and now I'm running on like 8 psi I think. If I built the motor, got new conrods and pistons, maybe a fire ring, lower compression and get some better heads then Id prolly throw an extra M112 on it I got from my Cobra. I'd go with Cosworth DOHC cyl heads if I could find em and if i could work out the timing drive but might need an OHV block for that.

But the Google AI was actually able to give me some pretty good data on ARP fasteners of different thicknesses and thread pitches. So all that being said Im thinking 100-110 ft lbs at least but I'll see how the fasteners Feel at that point with the ole Mk1 torque wrench (my arm) lol.

Hope that was enough information or rather I hope that wasn't too much information. Sry bout my Lame "huh" response Mr Brooks. I just wasn't looking for TTY torque specs or tightening procedures that's why the headline says Non TTY bolts torque spec inquiry, I was just looking for other peoples opinions and experiences on non TTY bolts for the 4.0 or on other applications where one would go from TTY to non TTY on a cast iron block with aluminum heads. I'll rip one for the both of us.